Original technical evidence

Formula verification release — August 31, 2026

“Tested” should be inspectable. This release publishes what was executed, what passed, what was blocked by validation, and the exact limits of the internal QA claim.

Default execution

30/30 passed

Every calculator was executed from the values published in its production form. No default case produced a JavaScript exception or internal validation failure.

Boundary handling

561 cases handled

522 boundary/option cases were accepted and calculated; 39 contradictory cases were blocked by business-validation rules; 0 produced an exception.

Expected-value checks

9/9 passed

Priority formula changes were independently recomputed against explicit expected values for runway, equipment ROI, late-fee illustration, minimum price and collection recovery.

Technical integrity checks on the release package

57 HTML pages

Every public HTML file was parsed; the one 404 document remains intentionally noindex.

56 sitemap URLs

Every sitemap URL resolves to a corresponding production file in the package.

2,249 local references

Internal links, scripts, styles and image references were resolved with zero broken local targets.

56 JSON-LD blocks

All structured-data blocks parsed as valid JSON in the production package.

Scope: These are package-level checks before deployment. A live smoke test is still required after Netlify publishes the build.

What this release proves—and what it does not

It does provide reproducible evidence

  • Production formula version 2026.08.31
  • All 30 published default cases executed successfully
  • Min/max and select-option boundary handling across every calculator form
  • Explicit expected-value checks for the priority formula changes
  • Machine-readable QA results and formula-review register

It is not independent assurance

This verification was performed internally on the production package. It does not certify the truth of a user’s business records, establish GAAP/IFRS compliance for a financial statement, or replace a CPA/ACCA/CIMA or licensed professional review.

See the independent-review status and reviewer packet →

Priority expected-value checks

CheckExpectedActualResult
cash runway base3.2 months3.2 monthsPass
cash runway downside 10%2.6 months2.6 monthsPass
equipment ROI base80.4% annual operating cash ROI80.4% annual operating cash ROIPass
equipment ROI downside52.3%52.3%Pass
late fee monthly illustration$67.50$67.50Pass
minimum price fully loaded$106.67$106.67Pass
minimum price 10% cost shock$117.33$117.33Pass
collection recovery required40.0% recovery required40.0% recovery requiredPass
receivables needed at expected rate$6,000.00$6,000.00Pass

Download machine-readable QA evidence (CSV) Download formula review register (CSV)